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F. TBINKS. CALCULATING MACHINE. LFiLICATIGllA HLED APR. 23,19l4.v

Patented M22., 1.916.'.

sHEETs-snsr l.

F. TRNKS@ CALCULATING MACHINE.

APPLmATloN FILED APR. 23, 1914.

. g Patented-Feb. 22, 1916.

l SHEETS-SHEET 2.

MTN/ey `F. TmnKS. CALC-ULATING MACHINE.

APPLlCATlON FILED APR. 23,1914.l

Patented Feb. 22,1916.

Fing.

rmivz Trunks, or miUNswIc'x, dEnMANY.

GALCULATIG-MACHINE Speclcation of Letters Patent.

Patented Feb. 22, 1916.

Application filed April 23, 1914. Serial No. 833,986.

T0 all whom it may concern.'

Be it known that I, FRANZ TRiNKs, manufacturer, citizen of the Duchy ofBrunsivick, Empire of Germany, residing. at Brunswick, Germany, haveinvented certa-inneW and useful Improvements in Qalculating-Machines, ofwhich the following is al specilication.

My invention relates to improvements in calculating machines, and moreparticularly in calculating machines in which the numeral wheels of theVrevolutions counting mechanism are provided-.With two series of numbersemployed respectively for perforining additions and multiplications onthe one hand and subtraeti'ons anddivisions on'the other hand, thenumbers of the series being alternately arranged about thecircumferences of the numeral wheels. In my United States Patent No,1,088,486 there is illustrated in Fig. 5 a. suitable manner of arrangingth numbers of both series. In the operation of the machine only one ofthe series of numbers of each numeral Wheel4 must be displayed throughthe peep hole ,while the other one must be covered, for

which purpose a Aslide is provided to cover the peep holes of thenumeral wheels and is formed with a single opening for displaying orbringing into vision one number at a time, of each numeral wheel.

Theobje'ct of the improvements is to provide automa-tic means wherebyVthe slide for the peep holes is set on the series of regisf teringmembers Vwhich corresponds to the particular operation of the machineabout tobe performed, or, in other Words, to the direction of rotationof the operating crank, when all of the rotating mechanism .is shiftedto the zero position.

' It is a further object of this invention to have the rotating countingmechanism shifted one step when passing from the zero point of theseries of numbers provided'for addition and multiplication to the zeropoint of the series of numbers provided for subtraction and division. Incalculating machines of the construction now in use a subsidiary toothmust be set by the hand of the operator.

For the purpose of explaining clearly the invention, the same is shownin the accompanying drawings, in which the saine reference numerals havebeen used in all the views to indicate corresponding parts.

In said drawings, Figure l, is a side View 4tion by means of cam disks61.

of .the calculating machine with the side Wall of the casing removedandI partly in section, Fig. 2, is a partial plan view of the machinewith the cover of the casing partly removed, Fig. 3, isa. side. viewsimilar to that shown in Fig. 1 but showing the parts indierentpositions, Figs. 4 to 7, are de-tail views of the machine shownin Figs.1 to 3, and Figs. 8 and 9, areside views 'of the carrying mechanismwhich is preferably 4used in the machine showniii Figs. 1 to 7,

the figures showingthe'parts in different positions.

Referring .particularly to the drawings, the calculating machineconsists 'of setting disks 41 provided with a plurality of teeth 62adapted to be shifted in a radial direc- The setting disks are adaptedto be rotated from a machine operating crank 40, and when thus rotatedthe teeth 62, which have-been shifted into opera-tive positions, operatenumeral wheels 60 of a registering mechanism. The said numeral wheelsare mounted on a slide 64C adapted to be shifted in a direction parallelto. the shaft 41 of the setting mechanism, and said wheels 60 areprovided with adapted to operate the laterally shiftable teeth 58. Eachof the setting disks 41, ex

-cept the first one from the right, is promechanism 66 -is adapted to beoperated by.

resetting mechanism 65 and carrymg means 4constructed in the form ofhammers 59 means of a single tooth wheel 67 mounted on the shaft 41"andV may have the construction shown in the United States Patent No.1,040,059. A However, it is to be understood that my present inventiondoes not relate to this revolution counting mechanism, b ut to arevolution-counting mechanism having numeral Wheels 3, which as shown,are located in the upper part of the machine above the setting mechanism41, 61.

Through intermediate gear wheels 45, 46, and 47 the revolutions cf. theoperating crank 40 are transmitted to a. shaft- 21 which performs thesame number of revolutions as said crank, and orA which shaft 21 asingle tooth wheel 34 is mounted for axial displacement,as may be'clearlyseen in Figs. 6 and 6*. By means of the said single tooth wheel34 and through the intermediary of intermediate gear Wheels 42, 43, and44 each rotation of the 'crank is registered on the nu-. meral Wheel 3,which coperates with sai j single tooth accordingstoA4 the position ofthe latter, the saidwheel 3 being turned for wardly or backwardly onestep upon each rotation of the operating crank. Each of the numeralwheels 3 is` connected with a governing disk 4 having a notch 5 adaptedto be engaged by the beveled nose of a pawl 6. Allthe pawls arerigidlymounted to a shaft 7 which is mounted on a rocking lever 23. Thisarrangement of the pawls permits the same to be operated in unison withthe movement of the lever 23 and to drop into engagement with thenotches 5 of the disks 4, when said notches 5 are in osition tol receivethe beveled noses of saidppawls, which position isshown in Fig. 1. Thedropping or downward movement of the pawls 6 may be caused by theinfluence of the spring pawl 38, see Fig. 7, connected with the pawls 6and which will be hereinafter more fully described; however, it maybefound desirable to have the pawls to drop by gravity. In the position ofthe pawls 6 as shown in Fig. l, the zeros of the series of numberscorrespondin to. additions and multipli-cations are disp ayed throughpeep holes formed in a slide 2. Projecting from the pawl 6 co operateswith the numeral wheel of the lowermost order, is a pin 8 which operatesa lever 9 journaled-in the side wall of the machine casing said lever 9being connected bya' link 10 with a rocking lever 14 mounted on theshaft 42 of the intermediate gear wheels 42 and carrying a geai`\vheel11. When the pawltmoves downwardly, the pin 8 rocks the lever 9, thelink 10 and which, in turn moves the lever 14 downwardly, so that thegear wheel llis shifted bodily into the path of two teeth 12 and 13which take part i'n the rotation of the machine operating crank 40, thisposition of the parts being shown in Fig. 1. The gear wheel 11 is inmesh with the intermediate gcar`wheel 42, so that the revolutionscounting mechanism Bcan be shifted one step by means of 'either one ofthe teeth 12 or 13. In order that during this shifting operation thelever 14 may not be rocked with the gear wheel 11 out of position forengagement with the teeth 12 or 13, a spring actuated locking pawl 15 isprovided and formed with two shoulders adapted to engage with an arm14', of the lever 14, respectively, in its rocked and normal positions.Projecting from the arm 14" of the lever 14, is a pin 16 adapted to rocka bell crank lever 17, 1T', mounted on a-shaft 1li. clockwise when thegea r wheel l1 rocked into the operative position 24, and which, whenrocked.' upward, shifts .the locking pawl 15 into non-locking positionby acting'on a pin 25 connected with the said pawl. Thereby the gearwheel 11 is moved into the inoperative position shown in Figj3, and thelower arm 17 of the lever 17 releases the finger 20 so as to permit thesame to be returned into normal position by suitable means such as aspring (not shown). Therefore the teeth 12 and 13 and the finger 20 areinoperative during the following addition or multiplication, so. thatthey can not affect the result of the calculation registered ontherevolution counting lmechanism 3. i

The carrying mechanism is shown in Figs. l, 2, 8, and 9. As shown eachof the' intermediate gear wheels 43, which are constantly in. engagementwith the numeral wheels 3, is equipped with a pin 48. When one. of thenumeral wheels 3- passes from its zero position toits nine position orvice versa the corresponding pin 48 acts on a cooperating rocking lever49 in such a way as to rock a gear wheel which is mounted on the lever49 and which is always in engagement with the intermediate gear wheel 42of the next higher order. Thereby the gear wheel 5() is shifted into thepath of teeth 51 which take part in lthe rotation' of the shaft 41' ofthe machinev crank, 'so that when rotating the setting-disks 41 one ofthe teeth 51 engages with the gear wheel 50 and effects the carryingoperation through the intermediate gear wheels 42, 43, 44. rl"he gearwheel 50 is held in its rocked position by means of a locking pawl 53which. is shifted by a spring 5 2 below the elevated right hand end ofthe lever 45). At theend of the carrying operation the locking pawl 53is returned into initial position by means of a bell crank lever 56which rocks an arm 5.3 connected with the shaft 54 of the lock ing pawlin the direction of the arrow 68 shown in Fig. 8. For operating the bellcrank lever 56 a cam disk 57 is provided which takes part. in therotation of the setting mechanism 41. After the lockingpawl :33 has beenrocked into non-locking position, a spring, for example the spring 52,rorlts the lever 49 downwardly and in contact with the lower shoulder ofthe pawl 53. Thus all the parts are returned into normal prsitions, andth(` transmission wheel 45() is out of the path of the teeth 51. When.the numeral wheel passes again from its nine position to its zeroposition,

pin 19 on which a tinger20 has a 'los or .vice versa, the same operationis re` pin and slot connections which permit slight' rocking movementsof the pawls relatively to said Shaft, which movements arefsuiiicient topermit the' pawlsto move into locking en agement with the coperatinglevers 49.

fit is desired to v,perform a subtraction or division' after theregistering mechanism has been reset all the numeral Wheels 3 must berotatediso far-that the pins 48, 'which start the carrying operation aremoved from the front-'sdes'of the levers 49 t6 the rear sides thereofbecause, otherwise, 'the first rotation;

of-a numerallwheel 3 caused by the single tooth 34 wouldresultin acarrying operation, .vvhile such a carrying operation should takeplaceafter tcnoperations of the crank of the'machine. Furthermore, theslide 2- Which is' formed'with the peep holes must be set in. such awaythat instead ofthe `zeros corresponding to ,the additions andmultiplications the zeros corresponding to the subtractions anddivisions are displayed .through 'the peep holes. In my improved machinethese operations, to Wit, the -rotation of all the numeral Wheels andthe setting -of the-slide formedwith the peep holes are automaticallyperformed, without operafio tionof any of the-parts by hand. For thispurpose-the following-mechanism is provided: vIn explaining themechanism I shall startfrom the normal position of the parts shown inFig. l1, inwhich,in the zero position-'of the numeral wheels 3, th enoses of all the pawls 6 engage in the notches' of governing disks 4 andthe-whel 11 .is in the path of the teeth 12 and 13. When rotating theshaft 21 to the left or in the direc'- tion-of the arrow 'w shown inFig. 1 for per. .45;

forming a division o'r subtraction, the erected finger 20.strikesagainst {those-126 ofthe lever 23' and rocks the said lever' abou-titsshaft 24 inthe direction of the arrow a: shown in Fig. 1. Thereby thepawl 6 which is connected with the opposite end ofthe lever 23 is movedin the direction of the'arrow y shown in Fig. 1 and. into the :positionshown in Fig. 3. l The lever 23 is adapted' to'be locked in lts endpositions by alocking pawl 27 adapted to engage in' 'either one ofnotches 28 and 29 of the lever 23. By shifting the -pawl 6 the slide -2--Which is provided Withthepeep holes and has a' rocking support on theshaft 1 is lifted, an upwardly curved arm 30 connected with thesaidslide being forced downwardly by the rearward movement of theshaft-7 carrying th e pawls 6.- By this movement or operationof thgpeephole slide -2', the number ,yychichoriginellylffwas dis- .through thepeep played'through the peep holesand which corresponds to additions andmultiplications tion through' the intermediary of the gear wheel 11 andthe intermediate gear wheels V42, 43, and 44. This carrying operation istransmitted through the pins 48, thelevers 49, the gear Wheels 50, andthe teeth 51 (Figs. 2 and 8) to' all the other numeral wheels 3, whichis necessary in order that the zeros of the series of numbers corre-Spending to the division are displayed holesand in order to bring thecarrying moans, thatis the pins 48 (Figs. 2 .and 8,) which are common toboth series of numbers, to the opposite sides of the levers 49, so thatcarrying is performed in the co-rrect position `when the series ofnumbers corresponding to the division are-used, the numeral wheel3 isadvanced by the single tooth 34 one step for each revolution of thecrank of the machine, in the same way as when performing additions andmultiplications.

Whenturning the crank clockwise the finger 2O rocks the lever 23 throughthe intermediary of the pawl 22 intothe position shown. in A slide 2which is under the action of the the tooth 13 can perform acarryingoperaloq Fig. 1, whereby the peep hole spring 3l, isturned into "theposition corresponding to the addition andV multiplication.

' In my. improved machine the driving -member 34, connected-With themachine crank 4l and provided for registering the number of'rotations ofthe crank, must come into operation as nearly as possible immediatelyafter starting .the operation' of the crank 41. In order that this bethe case in both directions of rotation of the crank suit-- able meansare provided, such as those shown in Figs. 6 and 6". -To the shaft 21 asleeve 32 is slidably connected which` is'provided with two teeth 34actuatedby arc-oinmon spring 33. These teeth 34 are so supstarted. 'Whenrotation of the crank shaft ported byfixed projections 35 of the sleevel takes place in the opposite direction, -the tooth 34 which is locatedat the right is operative, while the left hand tooth yields to thegearing.

norderthat when shiftingthe pawl 6 -in the direction of the arrow yshown in Fig. 1- .the numeral wheels 3 may not be rotated the mechanlsmshown inI Fig. 7 is p rovided.'

This mechanismA has, also, the function to lift the beveled noses ofthepawls 6 out of 4engagesin l'a notch of. a diskA 39 rigidly con nectedwith the shaft 21. Therefore, when,

- the crank is rotated either to the right or to the left the pawls 6are lifted by the disk- 39, the pawl- 38, 'and the rod 37 to such anextent that the-disks 3 and 4 can not be carried4 along' when the pawls6 move in the direction of the arrow y'shown in Fig. 1.

For resetting the revolutlons counting mechanism' 3. a wing nut- G9 isprovided.

which is shown in Fig, 2. The operation of the -present invention' i maybe described as follows:l When the numeral wheels 3 are reset by theturning of the Wingnut 69, the crank handle may be turned in a.direction corresponding4 to the work to be done bythe machine; that is,the handle may be turned to the left of ,its position shown in Fig.l'when` it is desired to add' or multiply, o r it may be turned to theright Awhen it is desired to subtract orY divide. This preliminarymovementi of the handle shifts the slide 2te such a'posi-ti'on. that theproper" numerals will be exposed or displayed through its peep openings.

Said shifting is effected in the following;

manner: When-it is desired to addor multiply, the .crank handled() ismoved to the left ofitsposition shownin Fig. 1,. thereby .rotating 'withit the disk 41 and the gear 45, which rotates the teeth 34 clockwisethrough the'intermediate gears 46 and 47. The teeth 34 engage upon eachlrotation thereof withthe gear 42. which vrotatesl the same one step to`effect the Vconsequent stepby-step. rotating movement of the numeraldisk 3 and the notched disk 4, through the intermediate gear 43.v Thisrotation of the disks 4 will 'bring the notch 5 thereof into position tobe engaged by the pawls 6 which will be moved down\vardly'bvtheinfluence of the spring pawl 38 into said notch. Upon the downwardmovement of the pawl 6, the projection Bengages with the lever 9. thusmoving the same upon its pivot downwardly to actuate the rocking lever14 carrying the gear 1l meshing with the gear 42. the gear 11 beingmoved in the path of the projcc tions 12 and 13 of the disk 41. At thispoint, the machine is now positioned to register and. as the. disk@rotates the teeth 12 or 13 wlll engage with the disk 11 to impartastep-by-.step rotting movement 'to the1 latter, which, in, turn,imparts said movement to the-gear 44, which will rotate 'loI thennmeralwlieel 3 upon 4each rotation of the dlsk 41 and. thus cause.. thecounting mechanism to'register, as will be clearly understood. The gear11 is held in the path. of the teeth 12 and 13' during the \coun tingi75 operation of the mach-ine by the locking' pawl' 15l which is operatedinthe following manner: When the saidgear is moved downwardly, the rearend of the rocking lever 14 is moved upwardly ,in a direction 80indicated bythe arrow Fig. 1, which rear end carries a pin 16 adaptedto. engage with the upper end of the bell cra-nk lever 17, which latterengagement will'move the end 1.7 of the bell crank lever in the positionshown in ig. 1 to erect the finger 20 to e'ect the engagement of thelatter with the pawl 22. When- Vthe pawl 22 is engaged by the finger420, theisame ismoved upwardly' and engageswith the p in 25 ofthe pawl 9015 and moves. the sauge rearwardly 'against the tension of its spring sothat therear end of the rocking lever 14 will rest in the uppershoulderof the pawll, whereby the lever' 4 .14 is locked i`n the position shownin Fig. 1 95 and the'gear 11 is held in the path of the :teeth 12 and13. The above-operation will permitan addition or multiplication operation of the machine and the slide 2 will be Aheld in position todisplay through 'its peep 100 hole the proper series ofqnumerals forsuch operation.

When 2i, is desired to use the machine for subtractingand dividing, thenumeral disks 3 are reset by the wing nut 69 and the crank 105 handle 40is rotated to the. right or anticlockwise.V This rotation of the crankliandle will rotate thc shaft 21 in the direction of the arrow tu,A Fig.1, and the finger 20 will engage with the projection 26 of therocking110 almv23 which will rotate the arm 23 in the direction of the arrow w,and, in con se quence, movesthe shaft 7 in the direction of the arrow y.The shaft 7 carries with it the pawls 6 which are raised by this rnove-115 ment of the shaft from the notphes 5 and disks 4. The shaft' 7, whenmoved in the direction of the arrow y, engages with the upwardly andrearwardly extended arm 30 and moves the same downwardly against the vtension of the expansion spring 31, and consequently, effects ashift-ing of the slide 2 whereby suitable subtraction and divisionseriesof numbers on'the disks 3 4are displayed through the peep hole ofsaid'slide. 125 By turning the crank handle clockwise. the finger 20will engage with Athe pawl 22 to, so operate the lever 23 upon its pivot24 as to cause the same o assume the position shown in Fig. l, whereuponthe spring 3l 13o 'the slide 2 to be moved into play the addition andmultip ication numerals of the numeral wheel 3.- 1

exerts its tension upon the arm 30 and causes o'sition to dis- I claimherein as my invention:

l. In a calculating machine, the combination with a revolutions countingmechanism comprising numeral wheels having two seriesV of alternatelyarranged numbers, and normallyl inoperative means to rock all thenumeral wheels, of normally locked movable members adapted to bereleased when all .the

. numeral wheels are incorresp'onding 'positions and when released tothrow said rocking means into operation, and means to return the movablemembers into locked position.

2. In a calculating machine, the combination withl a revolutionscounting mechanism comprising notched numeral wheels having two seriesof alternately arrangednumbers, and normally inoperative means to rockall the numeral wheels, of pawls adapted to engage in the notches'of thenumeral wheelsv when the latter are in corresponding posi-.

tions, means controlled by said pawls to thro-w said rocking means intooperation, and means to return the pawls into locked position.

3. In a calculating machine, the combination with a revolutions countingmechanism comprising numeral wheels having two' series of alternatelyarranged numbers, and normally inoperative means to rock all the numeralwheels, of normally locked movable members adapted to be released -whenall the numeral wheels are in corresponding positions andwhen releasedto 'throw said rock.- mg means into operation, means to return themovable members into locked position,

means to loclr the rocking.'means in opera-1' tive position, and meansoperative' after the operation of the rocking means to throw saidlocking means for the rocking means out of operation.

4. In a calculating machine, the combination withthe registeringmechanism, the setting mechanism, and operating means therefor, of arevelations counting mechanism comprising numeral wheels having twoseries of alternately arranged numbers, means to display the numbers ofeither one of the series of numbers .on the numeral wheels, and meanscontrolled by said operating means when changing the direction ofoperation of the s ame to shift the displaying means from displayingposition relatively to one series of numbers into displaying positionrelatively to the other series of numbers.

5. In a calculating machine, the'combination with the registeringmechanism, the i setting mechanism, and operating means therefor, ofrevolutions counting 1necha' 4ries of numbers on the numeral wheels,nor-l mally inoperative means controlled by said operatlng meanswhenehanging the directlon of operation of the same to shift. the

' displaying means from displaying position 75l relatively to one seriesof numbers into displayin position relatively to the other'series onumbers, and means controlled by said movable member when bein releasedto throw said normally inoperative means 30 into operation.

6. In a calculating machine, the combination with a revolutions countingmechanism comprising-notched numeral wheels having. two series' ofalternately .arranged numbers, 35 of means to display the .numbers of.either one of the series' of numbers on the numeral. wheels, pawlsadapted to engage in the notches of the numeral wheels when the latterare in corresponding positions, and an operative connection between saidpawls and displaying-means adapted to shift the dis playing means fromdisplaying position relatively to one series of numbersinto displayingposition relatively to the other series of numbers. l'

7. In a' calculating machine, the combination with the registeringmechanism, the set- .ting mechanism, operating means therefor,

and a revolutions counting mechanism com 100 prising notched numeralwheels having two series of alternately arranged num rs, of means todisplay the numbers of either one of the series of numbers on vthe-numeral wheels, when the latter are in corresponding positionsnormallyinoperative means controlled by said operating means when changingr thedirection of operation of the same to shift thedisplaying meansffromdisplaying for` of revolutions counting mechanism comprising numeralwheels having two series'of 120 alternately arranged numbers, a normallylocked movable member adapted to be released when all the numeral wheelsare in corresponding positions, a slide adapted to display the numbersof either one of vthe series of numbers on the numeral wheels and'having an operating arm, a rocker engaging saidarm, normally inoperativemeans controlled by said operating means when changing the direction ofoperation of the same to *rock said rocker so as to shiftthe slide fromdisplayir 3"' position relatively to one series of 4numbers intodisplaying position relativelyto-the other .se'ries-z-of-mmbers,andmeans controlled A. .by s'aid movable member'when being relr derative means' into operation.

`9 In a calculating machine, the combination Wi'th.t he"reg1s'terngmechanlsm, the settingmechanism, and operating means there` forrofrevolutions counting mechanism comprising tivo series of alternatelyarranged numbers, and carrying means therefor, a `normally inoperativefinger taking part in the 'operation -of the operating meansv andadaptedto move said carrying mechanism into inoperative position lwhenbeing operated @aa-oiled by 1n one direction; means controlled by saidcarrying-mechanism toset said linger in op erative positiomfmensto'display either .one

*to throw said normally inop,

bers int-o displaying position relatively to the other one of saidseries of numbers. 10. In a calculating machine, the combina tion with'the registering mechanism, the set ting mechanism, operating meanstherefor,

and Va revolutions counting mechanism compi'sing notched numeral wheelshaving two -sres of alternately arranged numbers` and normallyinoperative'means to rock all the numeral, wheels` of pawls adapted toengage inthe notches the latter are in corresponding positions,v meanscontrolled by' said pawls to throw said rocking means into operation'means lto ofthe numeral wheels wheny return the pawls into lockedposition; and a cam taking part inthe operation of said operating meansand adapted to lift the said pawls' out ofengagement with the notchesWhile the operating means are in operation.

In'testimony whereof I havehereunto set my hand in presence of twosubseribing..wt'

nes'ses.

FRANZ TRHIN KS. Witnesses AUGUST HEIMSOTH, RICHARD KULBs.

